refactor: clean up daemon and CLI duplication

Reduce repeated adapter dispatch, CLI action rendering, and config save
flows while keeping the current Roku behavior and docs aligned with the
known secret-menu limitations.

src/daemon/config.rs

@@ -18,6 +18,8 @@ pub struct TvctlConfig {
     pub discovery: DiscoveryConfig,
     /// Default-device settings.
     pub devices: DeviceConfig,
+    /// Remote input behavior.
+    pub remote: RemoteConfig,
     /// Developer tooling toggles.
     pub dev: DevConfig,
 }
@@ -28,6 +30,7 @@ impl Default for TvctlConfig {
             daemon: DaemonConfig::default(),
             discovery: DiscoveryConfig::default(),
             devices: DeviceConfig::default(),
+            remote: RemoteConfig::default(),
             dev: DevConfig::default(),
         }
     }
@@ -79,6 +82,11 @@ impl TvctlConfig {
                 self.discovery.timeout_secs.to_string(),
             ),
             ("devices.default", self.devices.default.clone()),
+            ("remote.roku_key_mode", self.remote.roku_key_mode.clone()),
+            (
+                "remote.roku_press_duration_ms",
+                self.remote.roku_press_duration_ms.to_string(),
+            ),
             ("dev.enabled", self.dev.enabled.to_string()),
             ("dev.roku_username", self.dev.roku_username.clone()),
             ("dev.roku_password", self.dev.roku_password.clone()),
@@ -102,6 +110,10 @@ impl TvctlConfig {
             "discovery.interval_secs" => self.discovery.interval_secs = parse_value(key, value)?,
             "discovery.timeout_secs" => self.discovery.timeout_secs = parse_value(key, value)?,
             "devices.default" => self.devices.default = value.to_string(),
+            "remote.roku_key_mode" => self.remote.roku_key_mode = value.to_string(),
+            "remote.roku_press_duration_ms" => {
+                self.remote.roku_press_duration_ms = parse_value(key, value)?
+            }
             "dev.enabled" => self.dev.enabled = parse_bool(key, value)?,
             "dev.roku_username" => self.dev.roku_username = value.to_string(),
             "dev.roku_password" => self.dev.roku_password = value.to_string(),
@@ -169,6 +181,25 @@ pub struct DeviceConfig {
     pub default: String,
 }
 
+/// Remote input behavior.
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(default)]
+pub struct RemoteConfig {
+    /// Roku key delivery mode: `keypress` or `keydown_up`.
+    pub roku_key_mode: String,
+    /// How long a Roku key stays pressed before `keyup`, in milliseconds.
+    pub roku_press_duration_ms: u64,
+}
+
+impl Default for RemoteConfig {
+    fn default() -> Self {
+        Self {
+            roku_key_mode: "keypress".to_string(),
+            roku_press_duration_ms: 75,
+        }
+    }
+}
+
 /// Developer tooling toggles.
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 #[serde(default)]